If this attribute is not specified, no rotation occurs. In situations where a stylesheet or other formatting mechanism
specifies table cell orientation, the rotate attribute can be
ignored.

colname

Specifies the column name in which an entry is found. The value is a
reference to the colname attribute on the
colspec element.

namest

Specifies the first logical column that is included in a horizontal span. The value is a reference to the colname attribute on
the colspec element.

nameend

Specifies the last logical column that is included in a horizontal span. The value is a reference to the colname attribute on
the colspec element.

morerows

Specifies the number of additional rows to add in a vertical span.

scope

The
presence of the scope attribute indicates that the current entry is a
header for the specified scope. Allowable values are:

row

The current entry is a header for all cells in the row.

col

The current entry is a header for all cells in the column.

rowgroup

The current entry is a header for all cells in the rows spanned by this
entry.

colgroup

The current entry is a header for all cells in the columns spanned by this
entry.

headers

Identifies one or more entry element headers that apply to its entry. The
headers attribute contains an unordered set of unique space-separated
tokens, each of which is an ID reference of an entry from the same table.